) behind the upper armour st ##rak ##e . the bar ##bet ##te hood ##s were protected by 10 inches of armour on their face while their sides were 6 inches thick and the roof was 1 @ . @ 5 inches ( 38 mm ) thick . diagonal bulk ##heads connecting the bar ##bet ##tes to the side armour were 12 – 14 inches thick , but only 6 inches thick at the lower deck level . the frontal armour of the case ##mates protecting the secondary armament was also 6 inches thick with the rear protected by 2 @ - @ inch ( 51 mm ) armour plates . the flat portion of the deck armour was 2 @ . @ 5 inches ( 64 mm
) behind the upper armour strake. the barbette hoods were protected by 10 inches of armour on their face while their sides were 6 inches thick and the roof was 1 @. @ 5 inches ( 38 mm ) thick. diagonal bulkheads connecting the barbettes to the side armour were 12 – 14 inches thick, but only 6 inches thick at the lower deck level. the frontal armour of the casemates protecting the secondary armament was also 6 inches thick with the rear protected by 2 @ - @ inch ( 51 mm ) armour plates. the flat portion of the deck armour was 2 @. @ 5 inches ( 64 mm